VHF issue
Printed From: Avidyne
Category: Avidyne General
Forum Name: IFD 5 Series & IFD 4 Series Touch Screen GPS/NAV/COM
Forum Description: Topics on Avidyne's IFD 5 Series and IFD 4 Series Touch Screen GPS/NAV/COM
URL: http://forums.avidyne.com/forum_posts.asp?TID=895
Printed Date: 19 May 2024 at 1:46am
Software Version: Web Wiz Forums 12.01 - http://www.webwizforums.com
Topic: VHF issue
Posted By: Tiptel
Subject: VHF issue
Date Posted: 15 Dec 2015 at 6:09am
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Hello! I have a Problem with only one of my double IFD440s: Sometimes I can see a red "x" at VHF on the system status page. I can't find any problems with the radio function, but what's the matter for the "x"? ... and I'm not very often in the maintenance mode. Sometimes it's there, sometimes not... Best regards, Heiko
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Replies:
Posted By: edanford
Date Posted: 15 Dec 2015 at 11:38am
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I saw the same thing yesterday when looking over my screens after 10.1.1.0 upgrade No VHF issues I am aware of ------------- Ed |
Posted By: AviJake
Date Posted: 15 Dec 2015 at 12:08pm
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You guys doing this with your prop spinning and all electrical buses on or is this battery only behavior? The point of the question is a matter of input voltage to the IFD. ------------- Steve Jacobson sjacobson@avidyne.com |
Posted By: edanford
Date Posted: 15 Dec 2015 at 1:27pm
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I was at about 21 Vdc running off external bat I have for playing with avionics. ------------- Ed |
Posted By: Tiptel
Date Posted: 15 Dec 2015 at 3:08pm
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With full battery (24 V) and without engine running. Thought I could verify an influence of my battery minder, but not allways. Software version 10.1.0.0 Btw: Absolut great units! |
Posted By: AviJake
Date Posted: 15 Dec 2015 at 3:12pm
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In the absence of any other data, I suspect you are hitting a voltage limit (on the low end). It's worth noting the behavior in a "full-up" airplane with prop spinning and all buses on. I bet everything is just fine in that case. ------------- Steve Jacobson sjacobson@avidyne.com |
Posted By: Tiptel
Date Posted: 15 Dec 2015 at 3:17pm
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Will check that - thanks for your fast replay! Do you need log files? |
Posted By: brou0040
Date Posted: 15 Dec 2015 at 10:50pm
AviJake, it sounds like the people that saw the x's did not notice any radio issues. Can you tell us what if any reduced functionality that x indicates? Do the x's correlate with the voltage limits of the table that describes what shuts down at different voltage levels?
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AviJake wrote: